Description: VoIP for short, it is a category of hardware and software that allows people to talk through the internet using IP rather than traditional PSTN (Public Switched Telephone Network) circuit transmissions. It is as if they were using a phone, except people do not have to pay a surcharge in order to use VoIP if they talk to another with the same VoIP program; the internet service is the only cost to the consumer. This is very practical in the business world, where the employees must communicate quickly and easily. VoIP copanies help tremendously to cut costs by providing this free service. A sample architecture is provided below:
Applications: Skype, CoolTalk, NetMeeting
Terminology: IP: specifies the format of packets, also called datagrams, and the addressing scheme.
Switch: In networks, a device that filters and forwards packets between LAN segments
PSTN: the international telephone system based on copper wires carrying analog voice data
Internet: A global network containing millions of computers
Router: A device that forwards data packets along networks
Circuit: A set of electronic components that perform a particular function in an electronic system
Description: VoIP for short, it is a category of hardware and software that allows people to talk through the internet using IP rather than traditional PSTN (Public Switched Telephone Network) circuit transmissions. It is as if they were using a phone, except people do not have to pay a surcharge in order to use VoIP if they talk to another with the same VoIP program; the internet service is the only cost to the consumer. This is very practical in the business world, where the employees must communicate quickly and easily. VoIP copanies help tremendously to cut costs by providing this free service. A sample architecture is provided below:
Applications: Skype, CoolTalk, NetMeeting
Terminology: IP: specifies the format of packets, also called datagrams, and the addressing scheme.
Switch: In networks, a device that filters and forwards packets between LAN segments
PSTN: the international telephone system based on copper wires carrying analog voice data
Internet: A global network containing millions of computers
Router: A device that forwards data packets along networks
Circuit: A set of electronic components that perform a particular function in an electronic system
Citations/References: TechWeb: Circuit, Webopedia: Router, Webopedia: Internet, Webopedia: PSTN, Webopedia: IP, Webopedia: VoIP, Phone Picture 1, VoIP Architecture
Related Links:
www.fcc.gov/voip/
en.wikipedia.org/wiki/Voice_over_IP
www.voip-info.org
www.vonage.com ,
http://www.skype.com/